Gabriel
Cayetano

Full-stack bookkeeping platform integrating traditional accounting with RPA automation to streamline financial operations.

• Invoice OCR and automated data extraction via LLMWhisperer, OpenAI & Robocorp to convert unstructured invoices into structured accounting records.
• Task scheduling, notifications, and real-time messaging for accountant–client coordination.
• Reduced manual data entry overhead, improving end-to-end operational efficiency.

Spaced-repetition platform for LeetCode-style questions, optimized for long-term retention during coding interview prep.

• Memory-decay scheduling algorithm achieving ~80–85% recall rates through optimized review intervals.
• AI-assisted code review providing solution feedback and professional critique for improved learning outcomes.
• Full-featured question bank with difficulty tracking and progress analytics.

Multithreaded Java HTTP/1.1 server built from scratch, mirroring core production web server capabilities.

• Concurrent client handling via ServerSocket and ExecutorService thread pool architecture.
• Persistent connections, gzip compression, file serving, and HTTP Basic authentication support.
• Conforms to the HTTP/1.1 specification for real-world compatibility and correctness.

Real-time chat backend with interest-based user matchmaking, designed for low-latency pairing and scalable session management.

• WebSocket-based real-time messaging with persistent message storage for conversation history.
• Redis-backed interest matchmaking for low-latency user pairing and horizontal scalability.
• Designed for high concurrency with session isolation and graceful disconnection handling.